Pigeonhole

casellario

(one of an array of open compartments in a desk, set of shelves, etc., used for sorting and/or storing letters, papers, or other items; one of an array of open compartments for receiving mail and other messages at a college, office, etc.)

piccionaia

(one of an array of open compartments for housing pigeons in a dovecote)

classificare

(to place (someone or something) into a notional category or class, especially in a way which makes unjustified assumptions or which is restrictive — see also categorize, classify, label)

etichettare

(to place (someone or something) into a notional category or class, especially in a way which makes unjustified assumptions or which is restrictive — see also categorize, classify, label)